Bui. 149, Bureau of Plant Industry, U. S. Dept. of Agriculture. 



PLATE X. 



FIG. 1. AN OAK RAILROAD TIE ROTTED BY DAEDALEA QUERCINA. 



FIG. 2. CROSS SECTION OF THE TIE SHOWN IN FIGURE 1, Two FEET FROM THE 



FRUITING BODY. 



